Definition: In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
Input: ['23', 'k', '87', '313', '1', 'a', '257', '287', '377', '297', 'f']

1, 2, 3, 5, 7, 8, 9